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GAF releases advisory on Hail Damage to Roofing


With the Chicago suburbs experiencing hail storms, GAF, North America’s Largest Roofing Manufacturer, has issued a Technical Advisory Bulletin on the subject of “Hail Damage to Low-Slope Roofing Membranes”.


Some common types of damage from hail storms to low-slope roofs include:

  • Membrane Bruising – hailstone impact often creates a depression in the membrane surface and can dispace the protective surfacing such as gravel, ceramic granules or reflective coatings.  Severe bruising can also crush underlying insulation.
  • Fracturing/Granule Surfacing Loss – hailstones can scour a roof surface and displace large amounts of protective granules.
  • Blistering/Splitting – blisters, splits, cracks and other premature deterioration of asphalt, modified bitumen, and certain composite type single-ply roof systems can occur.
  • Moisture Entry – immediate damage from a hailstorm can include cuts, punctures, or tears allowing water to enter the roofing membrane.
  • Damage to Metal Work and Skylights and Equipment – hail damage typically includes denting and impact damage to roof-mounted fixtures which can result in leaks.

Smart Roofing, Inc. is a GAFCertified Master Elite Roofing Contractor and can assist you with an inspection and documentation of any suspected hail damage to your roof.  We provide emergency repairs as well as permanent repairs of your damaged roof. Please contact us at 847.797.0404 or


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